Smaller towns and villages in Sweden have suffered economically as a result of out-migration.Jonathan Nackstrand/AFP via Getty Images Rafaela Dancygier, Princeton University and David Laitin, Stanford University Earlier this spring, the European Parliament voted to overhaul its immigration policy to more evenly distribute responsibility among member states for managing the arrival of migrants and asylum-seekers. Lurking in the details of the agreement, however, are provisions allowing for payments to third countries to block the entry of asylum-seekers to Europe – and, more ominously, prelimin…